一种新型电气化铁道电能路由器研究

Research on a New Electric Power Router for Electrified Railway

在实现可再生能源发电技术在牵引供电系统得到应用的前提下,针对27.5 kV电气化铁路牵引网中功率调度等问题,提出一种新型电气化铁道电能路由器装置。装置采用81电平变换技术满足电气化铁道供能系统对并网变换器的高压、高电能质量、大功率的需求,采用电压幅值—相角的能量调度方式确保电力机车正常供能及对牵引网的电压支撑,最后通过基于虚拟直流电机控制的储能单元实现能量的削峰填谷及协调控制。通过对新型电气化铁道电能路由器的拓扑结构、技术原理、能量调度计算及控制策略进行理论研究,并对装置进行建模仿真,验证了该电气化铁道电能路由器技术方案的有效性。

On the premise of realizing the application of renewable energy power generation in traction power supply system,aimed at the problems of power scheduling and operation cost in the traction network of 27.5 kV electrified railway,a kind of electrified railway energy router device was proposed.The device adopted 81 level converter to realize the high voltage,high power quality and high power demand of grid-connected converter for electrified railway energy supply system.The energy dispatching mode of voltage-phase angle was adopted to ensure the normal power supply of electric locomotive and the voltage support of traction network.At last,based on the energy storage unit controlled by the virtual DC machine,the energy peak cutting and valley filling,coordinated control were realized.Through analyzing the theoretical study of the topology,technical principle,energy scheduling calculation and control strategy of the new electrified railway power router,the modeling and simulation was implemented,and the effectiveness of the electrified railway power router technical solution was verified.